Tennis Picks Today: 5 Best Bets & Predictions Ft. Alex de Minaur vs Luciano Darderi, Casper Ruud vs Alexei Popyrin | May 21, 2026

This week’s tennis action continues with raging speed, and today, Australia’s Alex de Minaur is scheduled to face Italy’s Luciano Darderi at the quarterfinals of the Hamburg Open, while Norway’s Casper Ruud will face Australia’s Alexei Popyrin at the quarterfinals of the Geneva Open. An all-American clash will also take place between Learner Tien and Alex Michelsen in Geneva.

Elsewhere, at the Internationaux de Strasbourg, Emma Navarro will take on Zhang Shuai from China, while Canadian Leylah Fernandez will face countrywoman Victoria Mboko.

Here are our top best picks, alongside a brief analysis of what the outcome from today’s quarterfinals segment would be.

Top Tennis Picks and Best Bets

Alex de Minaur vs Luciano Darderi (Darderi -102)

In Hamburg, Alex de Minaur will battle Luciano Darderi for the first time after de Minaur beat Alejandro Fokina 6-2, 4-6, and 6-4, while Darderi defeated Roman Burruchaga 6-3 and 7(7)-6(4). While Darderi has never reached Hamburg’s semifinals, de Minaur has never won an ATP title on clay. Seeded No. 3, de Minaur has massively struggled on clay, with only five wins on the red surface this year, while Darderi has won four ATP titles on clay since 2024.

While de Minaur relies on a defensive game plan, the clay gives an advantage to Darderi to use his slow baseline game, alongside using his heavy topspin that could force the Australian to play an attacking game, pushing him out of his signature style. Expect Darderi to win in straight sets.

Casper Ruud vs Alexei Popyrin (Ruud -325)

In Geneva, Casper Ruud will face Alexei Popyrin for the third time. Ruud beat Germany’s Raphael Collignon 7(7)-6(2) and 6-2, while Popyrin beat Taylor Fritz 6-4, 6-4 to advance to the quarterfinals. While Popyrin is yet to reach the semifinal stage of a clay court event since 2023, Ruud has been a constant winner in Geneva with three titles.

If Ruud can neutralize Popyrin’s heavy shots, he can win in 2 sets.

Learner Tien vs. Alex Michelsen (Michelsen -102)

The two Americans, Learner Tien and Alex Michelsen, will be meeting for the fifth time in their career, with Michelsen leading their head-to-head 3-1. While Michelsen beat the veteran Stan Wawrinka, Tien beat Stefanos Tsitsipas in their previous battles in Geneva.

Tien is incredibly quick on the courts and prefers to do a lot of lateral moving around to make sure no points are taken off. Michelsen, however, plays a fast-paced, aggressive game, which has greatly helped him on clay. With his two-handed backhand, Michelsen is likely to get the win in 3.

Emma Navarro vs. Zhang Shuai (Navarro -275)

At the quarterfinals of Internationaux de Strasbourg, Emma Navarro will face Zhang Shuai for the fourth time, with Shuai leading their head-to-head 3-0. While Shuai ended the six-match winning run of Diane Parry 6-2, 7-5, Navarro beat Iva Jovic 6-4, 4-6, 6-1 earlier this week.

While Shuai relies on a fast-paced baseline game, Navarro excels with great footwork and defense. If Navarro can use her spinning forehand shot to extend the rallies, she can wear out Shuai and win in 3 sets.

Leylah Fernandez vs. Victoria Mboko (Mboko -180)

Leylah Fernandez and Victoria Mboko clash for the second time, with Mboko leading their head-to-head 1-0. While Fernandez beat Magdalena Frech 6-4, 3-6, 4-6, Mboko beat Lois Boisson 6-4, 6-3 to bag her first clay win of the season in Strasbourg. Fernandez has never advanced beyond two rounds in Strasbourg until now, while Mboko has won only one clay tournament in her career, at the ITF W35 level.

Fernandez relies on extended rallies that could wear out her opponents, and being a lefty, she does possess a shock advantage. On the other hand, Mboko relies on raw power and is known for her endurance on the red surface. The bout is expected to be a tough close-knitted match, but the expectation is for Mboko to use her overall physical advantage to win in 3 sets.

All bets and wagers sourced from BetMGM

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